floating-point

adjective
float·ing-point | \ ˈflō-tiŋ-ˌpȯint \

Definition of floating-point 

: expressed in, using, or being a mathematical notation in which a number is represented (as in a computer display) by an integer or a decimal fraction multiplied by a power of the number base indicated by an exponent (as in 4.52E2 for 452) — compare fixed-point

First Known Use of floating-point

1948, in the meaning defined above

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The first known use of floating-point was in 1948

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